Gagger



Sept. 26, 1933. T. E. HARKINS GAGGER Filed July 21, 1930 I N V ENTOR.

{Zn B Patented Sept. 26, 1933 GAGGER Tony E. Harkins, Saginaw, Mich; assignor of one-half to John M. Hagen, Saginaw, Mich.

Application July 21, 1930. sen-1.1 No. 469,340

1 Claim.

The prime object of the invention is to design a gagger for use in screening sand, flour, and similar materials.

A further object is to provide a gagger of simple and substantial construction, particularly adaptable for use in connection with riddles, such as used in foundries for screening sand and other materials of a granular classification.

A still further object is to provide a gagger which can be easily and economically manufactured, and by means of which damp sand can be screened without blinding the screen, as well as providing a better cut sand, which, when used in a foundry, produces smoother castings, and cuts the screening time very materially.

A further object still is to provide means for securing the gagger in position in the riddle.

The above and other objects will appearas the specification progresses, reference being had to the accompanying drawing in which I have shown the preferred embodiment of my invention, and in which like reference numerals indicate like parts throughout the several views thereof.

In the drawing:

dle showing my gagger secured in position therein.

Fig. 2 is a vertical sectional view taken on the line 2-2 of Fig. 1.

Fig. 3 isa detail plan view of the gagger. V

Fig. 4 is a section taken on the line 4-4 of Fig. 3.

Referring now more particularly to the drawing, the numeral 5 indicates the frame of a conventional sand riddle having a screen 6 secured therein in the usual manner, and while for the purpose of illustration I have shown the device used in a sand riddle, it will be obvious that it may be used for screening flour in bakeries, or in any other place where granular materials are screened.

The gagger is indicated by the numeral '7 and can be of any suitable shape and configuration, the bottom surface being smooth so as not to Fig. 1 is a plan view of a conventional sand ridv excessively wear the screen, the top being rounded, and spaced apart vertically extending lugs 8 are cast integral with the structure, and are adapted to accommodate a rod 9 therebetween, the ends of said rod being threaded, and project through the frame of the riddle, nuts 10serving to secure the rod tightly in position, sufficient play being provided so that the gagger easily slides over the screen without binding as the riddle is actuated. 6

As above stated the gagger frame can be of any desired configuration, and in the present instance, I have shown it oval in shape and formed with centrally disposed ribs 11, so spaced that as the riddle is actuated,'the gagger will sweep over approximately the entire area of the riddle screen, consequently, there will be no blind spots, and the screening will be very much accelerated.

In practice the gagger is placed in position and sand or other granular material is placed in the riddle, the riddle is then operated by shaking 7 it sidewise, this moves the gagger from side to side over the screen surface, breaking up lumps, cleaning the screen and preventing blinding, so. that the screening operation is performed in approximately one-third theftime required where no gagger is used.

From the foregoing description it will'be ob; vious that I have perfecteda very simple, practical, and economical riddle gagger for screening 5 materials of granular classification.

What'I claim is:- V f Q The combination with a riddle provided' with a screen in the lower end thereof, a horizontally disposed rod removably mounted in said riddle and spaced a predetermined distance'above the screen,

a gagger loosely mounted on the s'creenfand spaced apart pairs of upstanding lugs cast integral therewith and on opposite edges thereof,

said lugs being spaced to loosely receive said rod therebetween for limiting the movement of the gagger in one direction as the riddle is operated.

. TONY E. I-IARKINS. 

